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dkim=none (message not signed) header.d=none;dmarc=fail action=none header.from=foss.st.com; Received-SPF: Fail (protection.outlook.com: domain of foss.st.com does not designate 164.130.1.60 as permitted sender) receiver=protection.outlook.com; client-ip=164.130.1.60; helo=smtpO365.st.com; Received: from smtpO365.st.com (164.130.1.60) by AM2PEPF0001C714.mail.protection.outlook.com (10.167.16.184) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.25.13 via Frontend Transport; Tue, 12 May 2026 07:22:31 +0000 Received: from STKDAG1NODE2.st.com (10.75.128.133) by smtpO365.st.com (10.250.44.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.35; Tue, 12 May 2026 09:25:57 +0200 Received: from [10.252.13.51] (10.252.13.51) by STKDAG1NODE2.st.com (10.75.128.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.35; Tue, 12 May 2026 09:22:29 +0200 Message-ID: Date: Tue, 12 May 2026 09:22:27 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v13 3/4] gpio: rpmsg: add generic rpmsg GPIO driver To: Andrew Lunn , Mathieu Poirier CC: , Beleswar Prasad Padhi , "Shenwei Wang" , Linus Walleij , "Bartosz Golaszewski" , Jonathan Corbet , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Frank Li , Sascha Hauer , Shuah Khan , "linux-gpio@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Pengutronix Kernel Team , Fabio Estevam , Peng Fan , "devicetree@vger.kernel.org" , "linux-remoteproc@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , dl-linux-imx , Bartosz Golaszewski References: <472f85bd-42c2-40c6-abfd-b76924797069@ti.com> <21de8440-adf7-454b-acfc-06e50882e075@ti.com> <4c526816-b127-43e7-86e9-eee4dc1152bc@foss.st.com> <87850f70-5275-4393-941f-d01146a9cffc@foss.st.com> <08c815f5-ccbe-404a-95a1-a549aac8a55d@amd.com> <4ae35920-2539-4b12-8dea-efd407b8aaeb@lunn.ch> Content-Language: en-US From: Arnaud POULIQUEN In-Reply-To: <4ae35920-2539-4b12-8dea-efd407b8aaeb@lunn.ch> Content-Type: text/plain; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: bVtiIqSoF9pwSyv6C/BmQcI9qYWFUvsnie2aSbcdtFRpdfvmQpSGigNGW3Mqv+5hOczapxA9xlGT2eO5rc9MWh2ratAczCaHwpoESl/J98rOCTnfvdvzJGSFQC/6k8sXIRg8vke9/FpBdBUEnrjTSWuqoKhxNBpkL/o2lPSTijElZYzRe3JriVQJ/TyTYlUa5Q570M6NWbczxOSaco8UsMgBnQaiuo0AQCx2vuUS0j+BDZEFqXeWeShPVaw2F741HUU1fskmaZ4wBb9C68AIujYpNKKD9FNriR/RunPw3jFd4VubmPpetIViC2dDeDulVjNQDr5kMUiTgLdNx8Kc+YBhdJvNIGjKXEtRoFX+mOj+csSac1NoFst0Y+CRGXzsLypqoY2JrrcvlcDFk2q4hn4eZyeryffuUEXZF1gEJrZVxndrO4n7nrP5CyKRR0OT X-OriginatorOrg: foss.st.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 May 2026 07:22:31.7999 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2e71eb21-8021-4d83-8b09-08deaff73b3c X-MS-Exchange-CrossTenant-Id: 75e027c9-20d5-47d5-b82f-77d7cd041e8f X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=75e027c9-20d5-47d5-b82f-77d7cd041e8f;Ip=[164.130.1.60];Helo=[smtpO365.st.com] X-MS-Exchange-CrossTenant-AuthSource: AM2PEPF0001C714.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR10MB7995 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260512_002243_749896_B1391262 X-CRM114-Status: GOOD ( 10.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello Andrew, On 5/11/26 20:18, Andrew Lunn wrote: >> Arnaud, Beleswar, Andrew and I are all advocating for one endpoint per >> GPIO controller. The remaining issue it about the best way to work >> out source and destination addresses between Linux and the remote >> processor. I'm running out of time for today but I'll return to this >> thread with a final analysis by the end of the week. > > How many of the participants here will be in Minneapolis next week for > the Embedded Linux Conference? There is even a talk about this: > > https://osselcna2026.sched.com/event/2JQpx/building-virtual-drivers-with-rpmsg-key-design-principles-challenges-trade-offs-beleswar-prasad-padhi-texas-instruments?iframe=yes&w=100%&sidebar=yes&bg=no > > Maybe we can get together and decide on the final design after the > session. I won’t be there, but I can join remotely if a call is scheduled, Regards, Arnaud > > Andrew